Dell NetworkingTransceiverSFP1000BASE-LX1310nm Wavelength10km Reach - Kit

Dell switches have been pretty rock solid--they're far cheaper than Cisco/Juniper, have a lifetime warranty, and a good feature set. The most annoying thing about them over time--from the PowerConnect through the X Series--has been the rather awkward way you need to set up the IP address for managed mode, and the awful "Getting Started" guide that really doesn't reflect the switch. The X Series before the X1052 was effectively the same as for the PowerConnect (managed mode switch, then have to set a machine to the default subnet to reprogram the switch network config). With the X1052, the good news is it's much easier. The switch takes its IP address from DHCP--despite the sticker on the switch claiming it's still using 192.168.2.1--and the console actually has a USB UART, so it's trivial to connect to using a USB cable. However, the documentation doesn't reflect these changes; be aware.